Unabsorbed food goes to the large intestine. The liver also filters out solid particles of waste from the blood. These solid wastes are removed from the body through the rectum, which is at the end of the large intestine.

Liquid wastes are filtered by the kidneys, a part of the excretory system. The kidneys have long tubes coming out of them called ureters that drain liquid into the bladder. The bladder stores liquid waste called urine until it is passed out of the body through the urethra.

How does the Excretory System interact with other parts of the body?[edit]

The excretory system takes food from the digestive system and removes the waste. Wastes are also filtered from blood in the body. Sweat contains waste that is put out through the skin.